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I just upgraded from Ubuntu 16.10 to 17.04, and now my Emacs (25.1.1), working fine before, is broken. Here is the error from running emacs --debug-init

emacs: error while loading shared libraries: libMagickWand-6.Q16.so.2: cannot open shared object file: No such file or directory

I've seen (older) answers that hit around this issue, but this problem came from a simple Ubuntu upgrade...

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    Did you compile Emacs yourself? If so, you may need to recompile it after upgrading the OS. – Tianxiang Xiong Apr 14 '17 at 21:37
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Success. Apparently, it does take a recompile/install, albeit with a ./configure CFLAGS=-no-pie to start with. Not sure why. I installed/reinstalled everything libMagickWand-ish Synaptic had to offer beforehand.

  • PIE isn't supported: debbugs.gnu.org/cgi/bugreport.cgi?bug=18784 – jpkotta Feb 12 '18 at 16:59
  • If this answer resolves your problem, please accept it so we can mark this post as done. – Dan Apr 12 '18 at 9:23
  • if you compile a program that depends on a shared library, and then you replace the shared library with a newer version, your compiled program can't use the old version anymore, so it's broken. Your package manager deals with this for you for packaged programs, but anything you compile yourself needs to be recompiled. – Tyler Aug 10 '18 at 18:22

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